Constraints on large extra dimensions from neutrino oscillation experiments

H. Davoudiasl, P. Langacker, and M. Perelstein
Phys. Rev. D 65, 105015 – Published 10 May 2002
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Abstract

The existence of bulk sterile neutrinos in theories with large extra dimensions can naturally explain small 4-dimensional Dirac masses for the active neutrinos. We study a model with 3 bulk neutrinos and derive various constraints on the size of the extra dimensions from neutrino oscillation experiments. Our analysis includes recent solar and atmospheric data from SNO and Super-Kamiokande, respectively, as well as various reactor and accelerator experiments. In addition, we comment on possible extensions of the model that could accommodate the LSND results, using natural parameters only. Our most conservative bound, obtained from the atmospheric data in the hierarchical mass scheme, constrains the largest extra dimension to have a radius R<0.82μm. Thus, in the context of the model studied here, future gravitational experiments are unlikely to observe the effects of extra dimensions.

  • Received 24 January 2002

DOI:https://doi.org/10.1103/PhysRevD.65.105015

©2002 American Physical Society

Authors & Affiliations

H. Davoudiasl* and P. Langacker

  • School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540

M. Perelstein

  • Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720

  • *Email address: hooman@ias.edu
  • Permanent address: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104. Email address: pgl@electroweak.hep.upenn.edu
  • Email address: meperelstein@lbl.gov

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Vol. 65, Iss. 10 — 15 May 2002

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